{"name":"Smart Calculator Hub - Free Online Calculators","short_name":"SmartCalc Hub","description":"Free online calculators for finance, education, health, and technology. Calculate loans, GPA, BMI, ROI, and more.","start_url":"/","display":"standalone","background_color":"#ffffff","theme_color":"#2563eb","categories":["finance","education","health","utilities"],"icons":[{"src":"/icon-192.png","sizes":"192x192","type":"image/png","purpose":"any"},{"src":"/logo.png","sizes":"512x512","type":"image/png","purpose":"any"}]}